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U414_UxA_Bt_e_220802
3/5
2.1 Electrical Data
Power supply
: 24 V DC (20 ... 27 V DC) < 5 W
Current consumption : < 150 mA
Terminals KL1
: +24 V DC
= Power DC L+
0 V DC
= Power DC L-
Analog output
: 4 ... 20 mA, resistance max. 500 Ohm
Terminals KL2
: +
= Output Flow + 4 ... 20mA
-
= Output Flow - 4 ... 20mA
Relay output
: potential-free, max. 30 V DC, 100 mA
Terminals KL3
: output relay, normally-open contact
Terminal connections
3. Installation
The relevant standards for installing electrical equipment, the General Engineering Regulations and these
Operating Instructions apply.
The apparatus is to be connected to the local equipotential bonding system according to the currently valid
regulations. A protective ground terminal on the exterior of the flameproof enclosure serves this purpose.
The earth terminal is designed for cross-sections of 4 … 6 mm². Use a cable lug. The torque for fixture to
the earth terminal must amount to 2 … 3 Nm.
Cables are connected to the protection type "e" terminal blocks in the terminal compartment via two protec-
tion type "e" cable glands. Condition as supplied to customer: one "e" cable gland and one "e" screw plug.
Cable glands M20 thread are used for cables with an exterior diameter of 5 … 9 mm. The cable gland is to
be tightened with a torque of 4 Nm.
The terminals are for wires with a cross-section of 0.5 … 2.5 mm², AWG 20 to 16. Wire end sleeves must be
used. Bare wires must not be visible after installation. The connection cables used must be usable for the
temperature range of -25 … +80 °C.
We recommend a regulated mains adapter 24V DC
10% output, rating > 6 W, current >250 mA.
4. Cleaning / Maintenance
Sensors should be cleaned at regular intervals.
Any covering of dust on the electronic housing may not exceed 5 mm.
The housing cover threads are treated with graphite to protect against corrosion.
Any other maintenance or repair work is to be carried out solely by Höntzsch GmbH & Co. KG.
L L+
Power
Output
Relay
Flow
DC
+
KL1
KL2
KL3
1
2
3
4
5
6
